Data quality metrics extracted from 4k4q.cif.gz by aB_cif2table1 from BUSTER (Global Phasing Ltd.). See also the PDBx/mmCIF dictionary.

Raw JSON data
{
  "mxlims_type": "ReflectionSet",
  "version": "0.2.2",
  "uuid": "502682e257428f453c4890915820204a",
  "space_group_name": "I 41 2 2",
  "unit_cell": {
    "a": 97.818,
    "b": 97.818,
    "c": 98.777,
    "alpha": 90.0,
    "beta": 90.0,
    "gamma": 90.0
  },
  "wavelengths": [0.91800],
  "anisotropic_diffraction": false,
  "overall_refln_statistics": {
    "resolution_limits": [39.986,1.8000],
    "number_observations_unique": 11388,
    "quality_factors": [
      {
        "type": "R(merge)",
        "value": 0.053
      },
      {
        "type": "I/SigI",
        "value": 22.000
      },
      {
        "type": "Completeness",
        "value": 99.000
      },
      {
        "type": "Redundancy",
        "value": 6.600
      }
    ]
  },
  "refln_shells": [
    {
      "resolution_limits": [2.380,2.260],
      "number_observations": 7656,
      "number_observations_unique": 1543,
      "quality_factors": [
        {
          "type": "R(merge)",
          "value": 0.264
        },
        {
          "type": "I/SigI",
          "value": 2.700
        },
        {
          "type": "Completeness",
          "value": 94.100
        },
        {
          "type": "Redundancy",
          "value": 5.000
        }
      ]
    },
    {
      "resolution_limits": [2.520,2.380],
      "number_observations": 10910,
      "number_observations_unique": 1560,
      "quality_factors": [
        {
          "type": "R(merge)",
          "value": 0.220
        },
        {
          "type": "I/SigI",
          "value": 3.200
        },
        {
          "type": "Completeness",
          "value": 99.800
        },
        {
          "type": "Redundancy",
          "value": 7.000
        }
      ]
    },
    {
      "resolution_limits": [2.700,2.520],
      "number_observations": 10244,
      "number_observations_unique": 1461,
      "quality_factors": [
        {
          "type": "R(merge)",
          "value": 0.159
        },
        {
          "type": "I/SigI",
          "value": 4.500
        },
        {
          "type": "Completeness",
          "value": 99.900
        },
        {
          "type": "Redundancy",
          "value": 7.000
        }
      ]
    },
    {
      "resolution_limits": [2.910,2.700],
      "number_observations": 9739,
      "number_observations_unique": 1379,
      "quality_factors": [
        {
          "type": "R(merge)",
          "value": 0.105
        },
        {
          "type": "I/SigI",
          "value": 6.700
        },
        {
          "type": "Completeness",
          "value": 99.900
        },
        {
          "type": "Redundancy",
          "value": 7.100
        }
      ]
    },
    {
      "resolution_limits": [3.190,2.910],
      "number_observations": 8966,
      "number_observations_unique": 1268,
      "quality_factors": [
        {
          "type": "R(merge)",
          "value": 0.064
        },
        {
          "type": "I/SigI",
          "value": 10.500
        },
        {
          "type": "Completeness",
          "value": 99.900
        },
        {
          "type": "Redundancy",
          "value": 7.100
        }
      ]
    },
    {
      "resolution_limits": [3.570,3.190],
      "number_observations": 7866,
      "number_observations_unique": 1153,
      "quality_factors": [
        {
          "type": "R(merge)",
          "value": 0.049
        },
        {
          "type": "I/SigI",
          "value": 12.500
        },
        {
          "type": "Completeness",
          "value": 99.900
        },
        {
          "type": "Redundancy",
          "value": 6.800
        }
      ]
    },
    {
      "resolution_limits": [4.120,3.570],
      "number_observations": 6986,
      "number_observations_unique": 1030,
      "quality_factors": [
        {
          "type": "R(merge)",
          "value": 0.039
        },
        {
          "type": "I/SigI",
          "value": 15.500
        },
        {
          "type": "Completeness",
          "value": 99.900
        },
        {
          "type": "Redundancy",
          "value": 6.800
        }
      ]
    },
    {
      "resolution_limits": [5.040,4.120],
      "number_observations": 6077,
      "number_observations_unique": 881,
      "quality_factors": [
        {
          "type": "R(merge)",
          "value": 0.034
        },
        {
          "type": "I/SigI",
          "value": 16.700
        },
        {
          "type": "Completeness",
          "value": 99.900
        },
        {
          "type": "Redundancy",
          "value": 6.900
        }
      ]
    },
    {
      "resolution_limits": [7.130,5.040],
      "number_observations": 4597,
      "number_observations_unique": 702,
      "quality_factors": [
        {
          "type": "R(merge)",
          "value": 0.035
        },
        {
          "type": "I/SigI",
          "value": 15.900
        },
        {
          "type": "Completeness",
          "value": 99.900
        },
        {
          "type": "Redundancy",
          "value": 6.500
        }
      ]
    },
    {
      "resolution_limits": [39.986,7.130],
      "number_observations": 2509,
      "number_observations_unique": 411,
      "quality_factors": [
        {
          "type": "R(merge)",
          "value": 0.042
        },
        {
          "type": "I/SigI",
          "value": 12.500
        },
        {
          "type": "Completeness",
          "value": 98.900
        },
        {
          "type": "Redundancy",
          "value": 6.100
        }
      ]
    }
  ]

}
  

Table 1 generated from MXLIMS-JSON (via JavaScript):


Binned data generated from MXLIMS-JSON (via JavaScript):